On Sunday, ballot boxes opened its doors in front of the voters in Turkey and Bakur Kurdistan at 07:00 local time in the local elections.
Ballot boxes will be closed its doors at 5:00 pm, Election results appear in the middle of the night.
This is Turkey's first election since Erdogan took over broad presidential powers last year, whose government has been criticized for its economic policies and human rights record.
"Erdogan may receive an election blow as opinion polls suggest his ruling Justice and Development Party (AKP) may lose control of the capital Ankara and even Istanbul, the country's largest city," Reuters said.
Prior to the elections, the opposition Republican People's Party and the party formed an electoral coalition to compete with the AK Party and its partners in the nationalist movement.
Erdogan called the election "a matter of life or death" for Turkey and criticized his rivals, saying they supported terrorism with the aim of overthrowing Turkey. He warned that if the opposition candidate won in Ankara, the population would "pay the price", Reuters reported.
The leader of the Republican People's Party, "What is a matter of life or death?" "We are electing mayors, what does this have to do with the country's survival" Kemal Kılıçdaroğlu told an election rally in Asky.